Need Date Field added to Hustle to keep up with MailChimp Automation

Is there any way for WPMU DEV to add the date field validator with calendar drop down to Hustle? Especially now that MailChimp's automation is free and can have specific data trigger automation if fed in properly to the list (see documentation: http://kb.mailchimp.com/automation/automation-types#Date-Based-Automations)

Once more people learn about the amazingly helpful (and free) benefits of MailChimp Automation, more people might use this. For example, cases like this, https://www.nrsrentals.com/nrsrentals/chicago/#tenant_waitlist, where we want to start the automated MailChimp email campaigns a month before the desired move-in date... It could also be great for birthdays or looking to make a decision by date for email automation to be triggered.
Thanks for all your help!